![Multicast Basics and PIM Overview – Smarter Traffic Delivery in Modern Networks [CCNP Enterprise]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Multicast-Basics-and-PIM-Overview-–-Smarter-Traffic-Delivery-in-Modern-Networks.png)
Have you ever wondered how a single video stream from one server reaches hundreds or even thousands of users without consuming all the bandwidth on your network? That’s where Multicast comes in—it’s like broadcasting but smarter! As a trainer, I often tell my students, “If […]
![Configuring QoS on Cisco Devices: Boost Performance & Ensure Traffic Priority [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/Configuring-QoS-on-Cisco-Devices_Boost-Performance_Ensure-Traffic-Priority_networkjourney.png)
I know those moments when your VOIP calls crackle or your video meetings lag during business hours—it’s like trying to have a conversation through a wall! Over the years, I’ve learned that configuring Quality of Service (QoS) on Cisco devices can be a true game-changer. […]
![QOS Diagnose & Fix Network Performance Issues [CCNP Enterprise]](https://networkjourney.com/wp-content/uploads/2025/07/QOS_Diagnose_Fix-Network-Performance-Issues_networkjourney.png)
If you’ve ever hit the panic button because your VoIP calls are choppy or your video stream froze mid-presentation, I feel your pain. Just this morning, I was on a call that sounded like we were underwater—definitely not the crisp audio I expect! That’s when […]
![Ultimate Comparison: NetFlow vs sFlow – Insights [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/06/Ultimate-Comparison_NetFlow-vs-sFlow-–-Insights_networkjourney.png)
I know firsthand how critical choosing the right traffic monitoring tool is—be it for CCNA/CCNP preparation, network optimization, or troubleshooting. Today, we’ll decode two powerful technologies: NetFlow and sFlow. We’ll break down what they are, how they work, and which one suits your network—all in […]
![Can ARP ACLs Replace DHCP Snooping for ARP Security? Let’s Find Out! [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-ARP-ACLs.jpg)
I always say in my trainings — “Security doesn’t start at the firewall; it starts at the access port.” You’d be surprised how easy it is for an attacker to spoof an ARP reply and become the man-in-the-middle in your enterprise network. This is where […]
![Mastering DHCP Snooping and Binding Table: Secure Your Layer 2 Network Like a Pro [CCNP ENTERPRISE]](https://networkjourney.com/wp-content/uploads/2025/07/nj-blog-post-dhcp-snooping-binding-table.jpg)
I’ve had this discussion countless times with my students — “What if someone plugs in a rogue DHCP server and hijacks the IP allocation process?” Trust me, this isn’t just a theoretical concern. In modern LAN environments like shared offices, college campuses, and enterprise floors, […]
![Default Route Propagation – Your Gateway to the World [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Default-Route-Propagation-–-Your-Gateway-to-the-World-CCNP-ENTERPRISE.png)
Today, let’s talk about something deceptively simple but absolutely mission-critical in enterprise routing — Default Route Propagation. You know, in my CCNP classes, I often start the routing discussions with: “What happens when a router doesn’t know where to send a packet?” And the answer […]
![Loop Prevention Techniques – Keeping Your Network Stable and Efficient [CCNP ENTERPRISE]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/07/Loop-Prevention-Techniques-–-Keeping-Your-Network-Stable-and-Efficient-CCNP-ENTERPRISE.png)
We’re going to unravel one of the most critical topics in networking — Loop Prevention Techniques. If you’ve ever spent hours troubleshooting unstable networks, flapping routes, or broadcast storms, chances are, you’ve come face-to-face with some sort of looping issue. In the classroom or during […]
![Administrative Distance Chart – Explained with CLI, Lab, Use Cases & FAQs [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/Administrative-Distance-Chart-–-Explained-with-CLI-Lab-Use-Cases-FAQs-CCNP-ENTERPRISE-.png)
If you’re diving into routing protocols or just wrapping your head around how your router picks the “best” path, you must understand the concept of Administrative Distance (AD). Think of AD like trust levels among friends. You’ve got friends (routing protocols) like OSPF, EIGRP, RIP, […]
![Routing Table Lookup Process – Explained with Lab & CLI [ CCNP ENTERPRISE ]_networkjourney](https://networkjourney.com/wp-content/uploads/2025/06/Routing-Table-Lookup-Process-–-Explained-with-Lab-CLI-CCNP-ENTERPRISE-.png)
Today I’m going to deep-dive into a very important yet often overlooked concept – the Routing Table Lookup Process. Many of my students know how to configure OSPF, BGP, or EIGRP, but when asked “How does a router actually choose the best route when multiple […]
